Improvement in spring bed-bottoms



Witnesses Inventor Patented Aug,20,1872.

UNITED STATES PATENT OFFICE.

MARCUS FREEMAN, or CHICAGO, ILLINOIS.

IMPROVEMENT IN SPRING BED-BOTTOMS.

Specification forming part of Letters Patent No. 130,574, dated August 20, 1872.

SPECIFICATION. To whom it may concern:

Be it known that I, MARCUS FREEMAN, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Spring Bed Bottoms, of

which the following is a full, clear, and exactdescription, which will enable others skilled in the art to which my invention appertains to make and use the same, reference being had to the accompanying drawing forming a part hereof, and in which- Figure 1 represents a bottom View of my improved bed-bottom; Fig. 2, an end View of the same; and Fig. 3 a longitudinal vertical section of the same in the plane of the line :10 a of Fig. 2. I 7

Like letters of reference indicate like parts.

The object of my invention is to improve the construction and operation of spring bed bottoms; and to that end it consists in the novel features hereinafter described.

In the drawing, A A represent the frame of the bed-bottom, the parts A and A being in all respects alike. B B are hinges uniting the parts A and A in such a manner that one part may be folded against the'other as shown by the dotted lines in Fig. 2.- O G are slats, preferably flexible, and D D are cross-pieces to which they are attached. E E are spiral springs on whichthe cross-pieces D D rest, but these springs are not essential, as will hereafter appear. central part of the slats rest; only one such spring is shown in the drawing, but each slat is so supported. The springs E and F are attached to the frame, cross-pieces, and slats, respectively, in any suitable manner. G G are pins or bolts attached to thecross-pieces D D and projecting downward through crosspieces of the frame, as shown, and playing in F is a spring on which the perforations or slots in said cross-pieces as the the frame, and lapping the lower face of the cross-pieces through which the bolts G G pass,

which bolts also pass through the springs H H. g g are nuts run upon the lower end of the bolts G G, one above and one below the springs H H, so that the ends of the springs are firmly held between the nuts. ,By this means the slats O O are supported by the springs H H as well as by the spiral springs, and the upward movement of the slats is limited. The cross-pieces D D are broken midway between their ends so as to admit of the whole bed-bottom being folded together in the manner described. 1 are staples in the cross-pieces DD, and J is a removable pin or bolt passing through them when the bottom is not folded, so that one part will not yield to a pressure independently of the other. In order to attach the bottom to a bedstead provided with slats provision must be made for the downward movement of the ends of the springs H H.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The slats (J connected by means of crossbars and supported by the springs E and F, in combination with the springs H, bolts G, and nuts 9, and constituting, in connection with the hinged frame A A, staples I, and bolts J, a folding spring bed-bottom, substan tially as shown and described.

The foregoing specification signed by me this 29th day of June, A. D. 1872.

MARCUS FREEMAN.

Witnesses:

v F. F. WARNER, N. G. GRIDLEY. 

